USMLE Education Corner - Step 1 Quiz (June 2020) | Lincoln American University
Welcome to USMLE Step 1 Quiz (June 2020) of Lincoln American University. Play the quiz and submit the form. Once submitted, the results will be communicated to you by Email. Further, answer keys are published in the University's monthly newsletter. To subscribe to the newsletter, visit
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Question 1: A 16-year-old boy is admitted to the emergency department because of a knife wound to the left side of his chest. An x-ray of the chest shows an air-fluid level in the left side of the chest, partial collapse of the left lung, and elevation of the stomach bubble. The mediastinum is in the midline. Which of the following is the most likely diagnosis?
Hemopneumothorax, not under tension
Hemothorax, not under tension
Pneumothorax, not under tension
Question 2: A 17-year-old girl is brought to the emergency department 15 minutes after being stung by a bee. She has mild lightheadedness but no difficulty swallowing. Her temperature is 37.1°C (98.8°F), pulse is 100/min, respirations are 30/min, and blood pressure is 115/70 mm Hg. Physical examination shows no urticaria. Bilateral wheezing is heard on auscultation of the chest. Which of the following types of drugs is the most appropriate pharmacotherapy for this patient?
Question 3: A 52-year-old woman begins pharmacotherapy after being diagnosed with type 2 diabetes mellitus. Four weeks later, her hepatic glucose output is decreased, and target tissue glucose uptake and utilization are increased. Which of the following drugs was most likely prescribed for this patient?
Question 4: A 10-month-old boy is brought to the physician because of a 4-day history of fever and cough. His illness began with lowgrade fever and copious, clear nasal discharge. Two days ago he developed a moist, nonproductive cough and rapid breathing. He has received all scheduled childhood immunizations. He attends a large day-care center and has three schoolaged siblings. His temperature is 38°C (100.4°F), pulse is 101/min, respirations are 38/min, and blood pressure is 85/60 mm Hg. Physical examination shows nasal flaring and rhinorrhea. Chest examination shows intercostal retractions along with bilateral, diffuse wheezes and expiratory rhonchi. The infectious agent of this patient's condition most likely has which of the following properties?
Double-stranded nucleic acid genome
Mature virion lacking viral polymerase
Mediation of cell entry via a fusion protein
Viability on surfaces for several weeks
Question 5: A 30-year-old woman, gravida 2, para 0, aborta 1, at 28 weeks' gestation comes to the office for a prenatal visit. She has had one previous pregnancy resulting in a spontaneous abortion at 12 weeks' gestation. Today, her vital signs are within normal limits. Physical examination shows a uterus consistent in size with a 28-week gestation. Fetal ultrasonography shows a male fetus with no abnormalities. Her blood group is O, Rh-negative. The father's blood group is B, Rh-positive. The physician recommends administration of Rho(D) immune globulin to the patient. This treatment is most likely to prevent which of the following in this mother?
Development of natural killer cells
Development of polycythemia
Formation of antibodies to RhD
Generation of IgM antibodies from fixing complement in the fetus
Immunosuppression caused by RhD on erythrocytes from the fetus
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The questions included in this Quiz are selected from the sample test questions issued by the Federation of State Medical Boards of the United States, Inc. (FSMB), and the National Board of Medical Examiners® (NBME®) who holds the copyright of the Sample Test Questions. Selected questions are included in the quiz only for educational purpose under Fair use doctrine.
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